About
This is documentation of ESP-AT, a solution developed by Espressif to quickly and easily interface with ESP32-C6 products.
Espressif Wi-Fi and Bluetooth chipsets are often used as add-on modules to seamlessly integrate wireless connectivity features into new and existing products. In an effort to facilitate this and cut down on engineering costs, Espressif Systems has developed AT firmware as well as a rich set of AT commands that can be used to interface with Espressif products.

ESP-AT Solution
The AT firmware allows for rapid integration by providing:
In-built TCP/IP stack and data buffering
Easy integration with resource-constrained host platforms
Easy-to-parse command-response protocols
Customized, user-defined AT commands

ESP-AT Commands
Other Espressif Connectivity Solutions
In addition to ESP-AT, Espressif also provides other solutions to meet different integration needs:
ESP-Hosted is a software solution that enables Espressif series chips to act as wireless communication co-processors for external host systems. It allows host devices (Linux-based systems or microcontrollers, MCUs) to add Wi-Fi and Bluetooth/BLE capabilities via standard interfaces like SPI, SDIO, or UART. You can refer to ESP-Hosted GitHub for details.
ESP-IoT-Bridge Solution focuses on connectivity and communication between various network interfaces in IoT application scenarios, such as SPI, SDIO, USB, Wi-Fi, Ethernet and other network interfaces. In this solution, the bridge device can not only provide net access for other devices, but also be a separate equipment to connect the remote server. You can refer to ESP-IoT-Bridge GitHub for details.
These solutions target different system architectures and requirements. For users who are considering alternatives to the AT firmware for integrating wireless connectivity, these options may provide a better fit depending on host platform capabilities and design goals.